5results about How to "Brightness adjustable" patented technology

This invention provides a multicolor light source based on an anisotropic conductive film, comprising: a plurality of light-emitting panel packages, wherein each light-emitting panel package includes: a light-emitting panel configured to emit light; a lens holder configured to support a coupling lens and having a window, wherein each window is aligned with at least one light-emitting panel; and a coupling lens disposed on the lens holder and configured to transmit light emitted by the light-emitting panel; a circuit board configured to electrically connect the light-emitting panel to a motherboard; and a motherboard bonded to and electrically connected to the circuit board via the anisotropic conductive film. This invention allows the use of multiple monochromatic light-emitting panels to provide a mixed-color light source, such as a white light source, while also reducing the size of the light source or display.

This utility model relates to the field of temperature compensation technology and discloses a temperature-compensated LED lighting application circuit with stable light source, including a temperature detection circuit (120) for acquiring the temperature signal generated when the LED beads are working, a main control module (MCU) and a graded dimming circuit (130). The main control module (MCU) is used to receive the temperature signal and output a PWM signal according to the temperature signal; the graded dimming circuit (130) is used to receive the PWM signal; the main control module (MCU) adjusts the duty cycle of the output PWM signal according to the feedback temperature signal to control the graded dimming circuit (130) to dim the LED beads.

This application discloses a pixel driving circuit and a display device, relating to the field of display technology. The pixel driving circuit proposed in this application includes a first transistor, a first capacitor, a second capacitor, a driving transistor, a second transistor, and a light-emitting element. This application enables the adjustment of the brightness of the light-emitting element by providing an incremental voltage related to the dimming voltage to the source of the driving transistor when the first transistor is in a conducting state, the second transistor is in a cut-off state, and a dimming signal line provides a dimming voltage. This causes the second voltage stored in the first capacitor to be related to the data voltage and the dimming voltage, thereby adjusting the output current provided by the driving transistor during the light-emitting period based on the potential difference between the gate and source of the driving transistor. Thus, this application enables precise adjustment of the display brightness of the display device, improving its display performance.

This utility model discloses an automatic measuring instrument for eyeglass fitting, including a base, a lifting column mounted on the base, an operating screen mounted on the lifting column, a data acquisition device mounted above the operating screen, and a central controller located within the operating screen. The central controller is signal-connected to the data acquisition device, the operating screen, and the lifting column. The operating screen and the data acquisition device move up and down with the lifting column. A subject position area is provided facing the operating screen. The data acquisition device includes a mounting base and a camera component mounted on the mounting base. The operating screen has a front display area, a left display area, a right display area, and a front / back position adjustment display area. The front display area includes a front facial contour area and a frame contour area within the front facial contour area. The front / back position adjustment display area is used to indicate the front / back direction required for the subject's adjustment. This device uses the camera component to identify and acquire facial data from the subject in three directions, thereby automatically generating eyeglass fitting parameters.

The embodiment of the present application provides a kind of LED screen brightness adjusting method, device, system and electronic equipment.In the present embodiment, the screen brightness of LED screen is adjusted by target current gain and target Gamma value together, reduces the Gamma value adjustment range, reduces the situation that the contrast of screen is lost caused by the method of adjusting only Gamma maximum value to the brightness of LED screen, realizes the adjustment to screen brightness in the case where the contrast of screen is basically unchanged, improves screen display effect.